Neat little trick to force the preview images of running programs in Windows 7 taskbar or a so called Aero Peek, to show instantly with no delay at all.
Rainbows right? Who does not like rainbows? In this Photoshop tutorial you can learn how to create a rainbow from scratch and add it to any image of your choice.
If you want to make a clean install of the new OS X Mavericks or even the older versions of Mac OS X, than I strongly suggest you to create a bootable OS X key or a drive.